Bob, there is a new thread here where WBJ ask on how to circulate his upper half of the ponds water. His project as u know is a winter situation. But here in Texas I have a problem with keeping some cooler water refuge with good DO numbers during the summer. I've tried reducing the hrs and also the time of day the system is run but still have a problem keeping cooler water temps for sanctuary at the ponds deeper depths during our summer months. For me I am thinking of running surface aeration during those hot summer days and doing something different with the bottom diffusers. I can see things with my fish during those times that show the fish are under stress because of the heated water temps at the ponds bottom.

After 4 yrs of running bottom air diffusers I am not convinced the good outweighs the bad when it comes to dealing with our ponds and our Tx summer heat.

Do not judge me by the politicians in my City, State or Federal Government.


Tracy